Process of reducing and deodorizing residues.



UNITED STATES YVALTER P. LINCOLN AND MORRIS S. GREENBAUM, OF LOUISVILLEATENT FFICE.

KENTUCKY.

SPECIFICATION forming part of Letters Patent No. 688,102, dated December3, 1901. Application filed September 10, 1900. Serial No. 29,619. (Nospecimens.)

T0 aZZ whom it may concern.-

Be it known that we, WALTER P. LINCOLN and MORRIS S. GREENBAUM, citizensof the United States, residing at Louisville, in the county of Jeifersonand State of Kentucky, have invented certain new and useful Improvementsin Processes of Reducing and Deodorizing the Residuum from theManufacture of Certain Named Substances; and We do hereby declare thatthe following is a clear, full, and exact description of the invention,which will enable others skilled in the art to which it pertains to usethe same.

Experience has demonstrated that the residuum or refuse from themanufacture of spirituous and malt liquors, starch, sugar, and glucose,consisting of water in combination with certain solid particles, arevaluable and when separated and dried constitute a superior food forstock. Various methods and processes have been adopted to separate andconserve the solid matters therein contained, all of which are more orless successful in separating and conserving the larger particles ofmatter, but none of which have succeeded in saving the more minuteparticles in combination, which are lost or de-' stroyed in the variousprocesses now in use.

When they are permitted to pass away in the liquid remaining after thecompletion of the process, they finally decompose and produce offensiveodors. These minute particles of matter constitute the more valuablepart of the solids in combination in all such residuum; and the objectof our invention is to separate and conserve them in addition to and inconnection with the larger particles,

. thereby increasing the quantity and improving the quality of the foodproduct and also sterilizing, deodorizing, and disinfecting theresulting liquor, so as to destroy all ofliensive odor. The method ofaccomplishing these results may be varied considerably without impairingour process as a whole, and we do not bind ourselves to any particularone; but in practice we find the followingto be effective.

The residuum as it is discharged is screened, reeled, or settled, so asto separate the larger solids, and the thin liquid is then drawn ofiinto settling-tanks, of iron or other suitable material. The screeningsare then subjected to pressure in a filter, hydraulic, or other suitablepress, and the liquid resulting from this pressure is added to that inthe settling-tanks. Then chlorid of sodium or othersuitable salt isadded to the liquid in the settling-tanks, and

this liquid is subjected to a current of electricity applied by any ofthe ordinary methods, the object and effect of which is to has: ten andincrease the depositing of the remaining solids and also to sweeten andster are combined with the screenings and the whole subjected topressure and heat or to.

pressure or heat in any of the usual methods to remove the remainingmoisture to dryness, and the product is then ready for market.

In applying the current of electricity we have used wooden tanks to holdthe liquid,

the poles of the battery being composed of iron, preferably boiler iron.o have also used the same character of tank with the poles of thebattery, composed of copper (anode and cathode) plated with platinum.IVe have also usediron tanks, the tank itself forming the cathodeof thebattery, with the anode, also composed of iron, suspended in the centerthereof. Either of these methods of applying thecurrent producesatisfactory results with or without the addition of the salt. Inpractice, however, we find it preferable to use the salt, as itsaddition intensifies the action of the current and combines with theacetic acid which the residuum contains. Ghlorid of sodium is the saltit is preferable to use because the action of the current of electricitythereon produces free chlorin, which sweetens and sterilizes the liquid,so as to remove and prevent all offensive odors therefrom, and increasesand hastens the deposition of'the solids in the liquid.

In all methods of treating residuum of this character to separate andconserve the solids in combination heretofore used the separation andconservation has not been complete and the water remaining is sour andgives off disagreeable and olfensive odors. In our process, by the useof a current of electricity and chlorid of sodium or other suitablesalt, the finer and more minute particles in combination are separated,deposited, and saved, thereby increasing the quantity and improving thequality of the food product, and the water discharged is sweet,innocuous, and without disagreeable odor or smell. In the processesheretofore used for this purpose screens, reels, settling-tanks,pressure, and heat have been used,either singly or in variouscombinations, or both. The use of the current of electricity and theaddition of chlorid of sodium or other suitable salt is new, and wedesire it distinctly understood that the use of the current ofelectricity in combination with the other parts of the process may beused successfully without the addition of chlorid of sodium or any othersalt.

Having fully described our invention, what we claim, and desire tosecure by Letters Patent, is

1. The process of treating the residuum from the manufacture ofspirituous and malt liquors, sugar, starch, and glucose, which consistsin reducing to a deposit the solid particles held in suspension in saidresiduum by subjecting said residuum to the application of a current ofelectricity, substantially as described.

2. The process of treating the residuum from the manufacture ofspirituous and malt liquors, starch, sugar, and glucose, for the purposeof separating the solids therefrom, which consists in adding a salt andthen subjecting the same to a current of electricity, substantially asdescribed.

3. The process of treating the residuum from the manufacture ofspirituous and malt liquors, starch, sugar and glucose, for the purposeof separating the solids therefrom, which consists in adding chlorid ofsodium and subjecting the same to the application of a current ofelectricity, substantially as described.

4. The process of treating the residuum from the manufacture ofspirituous and malt liquors, starch, sugar and glucose, which consistsin separating the larger particles of solid matter, and then reducing toa deposit the solid particles held in suspension-in the remainingresiduum, by subjecting the same to the application of a current ofelectricity, substantially as described.

5. The process of treating the residuum from the manufacture ofspirituous and malt liquors, starch, sugar and glucose, which consistsof physically separating from the residuum the larger particles of solidmatter, then adding to the remaining residuum a salt and then subjectingthe said remaining residuum to the application of a current ofelectricity, substantially as described.

6. The process of treating the residuum from the manufacture ofspirituous and malt liquors, starch, sugar and glucose, which consistsof physically separating from the residuum the larger particles of solidmatter, then adding to the remaining residuum, chlorid of sodium andthen subjecting the said remaining residuum to the application of acurrent of electricity, substantially as described.

7. The process of separating and conserving solids contained in theresiduum of spirituous and malt liquors, starch, sugar, and glucose,which consists in reducing the solid matter in the residuum to a depositby electrolysis and then separating the deposited solids from theliquid, and reducing said solids to a dried state, substantially asdescribed.

8. The process of treating the residuum from the manufacture ofspirituous and malt liquors, starch, sugar and glucose, for the purposeof separating and conserving the solids therein contained forstock-food, which consists in separating the larger particles of solidsfrom the residuum, drawing off the thin portion in tanks, subjectingseparated solids to pressure, then adding the expressed liquid to thatin the tanks, subjecting the liquid in the tanks to a current ofelectricity, substantially as described.

9. The process of treating the residuum from the manufacture ofspirituous and malt liquors, starch, sugar and glucose, for the purposeof separating and conserving the solids therein contained, forstock-food, which consists in separating from the residuum, the largerparticles of solid matter, then drawing off the thin portion insettling-tanks, subjecting the separated solids to pressure, adding theexpressed liquid to that in the tanks, subjecting the liquid in thetanks to the action of electrolysis, then drawing off the water from thedeposited solids, mixing the same deposit with the previously-separatedsolids and reducing the whole to a dried state, substantially asdescribed.

10. The process of treating the residuum from the manufacture ofspirituous and malt liquors, starch, sugar and glucose, for the purposeof separating and conserving the solids contained therein forstock-food, which consists of separating the larger particles of solidsfrom the residuum, drawing off the thin portion into settling-tanks,subjecting the separated solids to pressure and adding the expressedliquid to that in the settling-tanks, adding thereto chlorid of sodiu tnand subjecting the liquid in the tanks to a current of electricity,drawing off the water from the dcposited solids, mixing the deposit inthe tanks with the previously-separated solids, and reducing the wholeto a dried condition, substantially as described.

WALTER P. LINCOLN. MOB BIS S. GREENBAUM.

Witnesses:

OHAs. CONRAD, D. J. LINCOLN.

